SpreadsheetInfo.SetLicense("FREE-LIMITED-KEY");

ExcelFile excel = new ExcelFile();

excel.Save("文件路径");

excel.DocumentProperties.BuiltIn.Add(new KeyValuePair<BuiltInDocumentProperties, string>(BuiltInDocumentProperties.Title, TITLE));
excel.DocumentProperties.BuiltIn.Add(new KeyValuePair<BuiltInDocumentProperties, string>(BuiltInDocumentProperties.Author, "CNXY"));
excel.DocumentProperties.BuiltIn.Add(new KeyValuePair<BuiltInDocumentProperties, string>(BuiltInDocumentProperties.Company, "CNXY"));
excel.DocumentProperties.BuiltIn.Add(new KeyValuePair<BuiltInDocumentProperties, string>(BuiltInDocumentProperties.Comments, "By CNXY.Website: http://www.cnc6.cn"));

excel.DefaultFontName = "Times New Roman";

ExcelWorksheet sheet = excel.Worksheets.Add("表格名称");

sheet.ProtectionSettings.SetPassword("cnxy");
sheet.Protected = true;

sheet.ViewOptions.ShowGridLines = false;

sheet.Cells["A1"]
sheet.Cells[0,0]
sheet.Rows[0].Cells[0]

sheet.Cells["A1"].Value= 内容

CellStyle style = new CellStyle();
//设置水平对齐模式
style.HorizontalAlignment = HorizontalAlignmentStyle.Center;
//设置垂直对齐模式
style.VerticalAlignment = VerticalAlignmentStyle.Center;
//设置字体
style.Font.Size = 22 * PT; //PT=20
style.Font.Weight = ExcelFont.BoldWeight;
style.Font.Color = Color.Blue;
sheet.Cells["A1"].Style = style;

sheet.Cells[24,1].Style.FillPattern.PatternStyle = FillPatternStyle.Solid; 
sheet.Rows[24].Cells[1].Style.FillPattern.PatternForegroundColor = Color.Gainsboro;

style.Borders.SetBorders(MultipleBorders.Outside, Color.Black, LineStyle.Thin);

CellRange range = sheet.Cells.GetSubrange("B2", "J3");
range.Value = "Chart";
range.Merged = true;
sheet.Cells.GetSubrangeAbsolute(24, 1, 24, 9).Merged = true;

LineChart chart =(LineChart)sheet.Charts.Add(ChartType.Line,"B4","J22");

chart.Title.IsVisible = false;

chart.Axes.Horizontal.Title.Text = "Time";
chart.Axes.Vertical.Title.Text = "Voltage";

ValueAxis axisY = chart.Axes.VerticalValue;
//Y轴最大刻度与最小刻度
axisY.Minimum = -100;
axisY.Maximum = 100;
//Y轴主要与次要单位大小
axisY.MajorUnit = 20;
axisY.MinorUnit = 10;
//Y轴主要与次要网格是否可见
axisY.MajorGridlines.IsVisible = true;
axisY.MinorGridlines.IsVisible = true;
//Y轴刻度线类型
axisY.MajorTickMarkType = TickMarkType.Cross; 
axisY.MinorTickMarkType = TickMarkType.Inside;

using GemBox.Spreadsheet;
using GemBox.Spreadsheet.Charts;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
namespace SpreadSheetChartDemo
{
 class Program
 {
 const int PT = 20;
 const int LENGTH = 200;
 const string TIMESNEWROMAN = "Times New Roman";
 const string TITLE = "Spread Sheet Chart Demo";
 static void Main(string[] args)
 {
 SpreadsheetInfo.SetLicense("FREE-LIMITED-KEY");
 ExcelFile excel = new ExcelFile();
 //Excel默认字体
 excel.DefaultFontName = TIMESNEWROMAN;
 //Excel文档属性设置
 excel.DocumentProperties.BuiltIn.Add(new KeyValuePair<BuiltInDocumentProperties, string>(BuiltInDocumentProperties.Title, TITLE));
 excel.DocumentProperties.BuiltIn.Add(new KeyValuePair<BuiltInDocumentProperties, string>(BuiltInDocumentProperties.Author, "CNXY"));
 excel.DocumentProperties.BuiltIn.Add(new KeyValuePair<BuiltInDocumentProperties, string>(BuiltInDocumentProperties.Company, "CNXY"));
 excel.DocumentProperties.BuiltIn.Add(new KeyValuePair<BuiltInDocumentProperties, string>(BuiltInDocumentProperties.Comments, "By CNXY.Website: http://www.cnc6.cn"));
 //新建一个Sheet表格
 ExcelWorksheet sheet = excel.Worksheets.Add(TITLE);
 //设置表格保护
 sheet.ProtectionSettings.SetPassword("cnxy");
 sheet.Protected = true;
 //设置网格线不可见
 sheet.ViewOptions.ShowGridLines = false;
 //定义一个B2-G3的单元格范围
 CellRange range = sheet.Cells.GetSubrange("B2", "J3");
 range.Value = "Chart";
 range.Merged = true;
 //定义一个单元格样式
 CellStyle style = new CellStyle();
 //设置边框
 style.Borders.SetBorders(MultipleBorders.Outside, Color.Black, LineStyle.Thin);
 //设置水平对齐模式
 style.HorizontalAlignment = HorizontalAlignmentStyle.Center;
 //设置垂直对齐模式
 style.VerticalAlignment = VerticalAlignmentStyle.Center;
 //设置字体
 style.Font.Size = 22 * PT;
 style.Font.Weight = ExcelFont.BoldWeight;
 style.Font.Color = Color.Blue;
 range.Style = style;
 //增加Chart
 LineChart chart = (LineChart)sheet.Charts.Add(ChartType.Line,"B4","J22");
 chart.Title.IsVisible = false;
 chart.Axes.Horizontal.Title.Text = "Time";
 chart.Axes.Vertical.Title.Text = "Voltage";
 ValueAxis axisY = chart.Axes.VerticalValue;
 //Y轴最大刻度与最小刻度
 axisY.Minimum = -100;
 axisY.Maximum = 100;
 //Y轴主要与次要单位大小
 axisY.MajorUnit = 20;
 axisY.MinorUnit = 10;
 //Y轴主要与次要网格是否可见
 axisY.MajorGridlines.IsVisible = true;
 axisY.MinorGridlines.IsVisible = true;
 //Y轴刻度线类型
 axisY.MajorTickMarkType = TickMarkType.Cross; 
 axisY.MinorTickMarkType = TickMarkType.Inside;
 Random random = new Random();
 double[] data = new double[LENGTH];
 for (int i=0;i< LENGTH; i++)
 {
 if( random.Next(0,100) > 50)
 data[i] = random.NextDouble() * 100;
 else
 data[i] = -random.NextDouble() * 100;
 }
 chart.Series.Add("Random", data);
 //尾部信息
 range = sheet.Cells.GetSubrange("B23", "J24");
 range.Value = $"Write Time:{DateTime.Now:yyyy-MM-dd HH:mm:ss} By CNXY";
 range.Merged = true;
 //B25(三种单元格模式)
 sheet.Cells["B25"].Value = "http://www.cnc6.cn";
 sheet.Cells[24,1].Style.FillPattern.PatternStyle = FillPatternStyle.Solid;
 sheet.Rows[24].Cells[1].Style.FillPattern.PatternForegroundColor = Color.Gainsboro;
 //B25,J25
 sheet.Cells.GetSubrangeAbsolute(24, 1, 24, 9).Merged = true;
 string filePath = $@"{Environment.CurrentDirectory}\SheetChart.xlsx";
 try
 {
 excel.Save(filePath);
 Process.Start(filePath);
 Console.WriteLine("Write successfully");
 }
 catch(Exception ex)
 {
 Console.WriteLine(ex);
 }
 Console.Write("Press any key to continue.");
 Console.ReadKey();
 }
 }
}